Inchelium, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Inchelium is known for its proximity to the Colville Indian Reservation and the scenic beauty of Lake Roosevelt. The best time to travel to Inchelium, United States, is in July when the average air temperature is around 85°F (29°C) and the water temperature in nearby lakes is approximately 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!